/*
   void *not256(void* dest, const void* src1)
   a0=dest, a1=src1
*/
.text
.globl not256
.type not256, @function

.align 2
not256:
    li t0, 8
    vsetvli t0, t0, e32, m1
    vle32.v v1, (a1)
    vnot.v v2, v1
    vse32.v v2, (a0)
    ret